blocking users access to certain page

[markfox]

i have a code within a php page that opens a few text files and checks to see if a IP or hostname of a visitor matches any in the text files or even a portion of it.

The problem is that in some cases this works because some visitors have static IP addresses. However, i am having problems with the users that use ISP's that give dynamic IP's. The only other way i can seem to identify them without using their IP or hostname is to read a cookie stored on their PC. This has improved the situation and is working quiet well. However, it seems some visitors have figured this out and as a result they delete their cookies and manage to bypass it.

can anyone please recommend any other solutions or ways around this.

thank you

[Birdman]

A user login system seems to be the only true solution.

[markfox]

oh sorry, i forgot to mention, i also have that and have the facility to disable a account and a user cannot create another account with that same email address. but the problem is they end up creating sooo many multiple accounts. i also have email verification which requires their email address to be valid. but they create new email accounts and use it.